Home / 21,926.53-30,256.36-12,972.30

Finding the Fourth Proportional to 21,926.53, 30,256.36 and 12,972.30

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Solution

The fourth proportional to 21,926.53, 30,256.36 and 12,972.30 is: 17,900.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,926.53 : 30,256.36 = 12,972.30 : x
  2. Step 2: Convert to fraction form
    21,926.53/30,256.36 = 12,972.30/x
  3. Step 3: Cross multiply
    21,926.53x = 30,256.36 × 12,972.30
  4. Step 4: Simplify right side
    21,926.53x = 392,494,578.83
  5. Step 5: Solve for x
    x = 392,494,578.83/21,926.53
  6. Step 6: Final answer
    x = 17,900.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.